As solar panel technology has matured, it's also diversified and become more specialized. The result is a growing number of types of solar panels, each with distinguishing features that make them better for some uses than others.
Here's a rundown of the main types of solar panels you can choose from for your system. You'll also learn about developing solar panel technology that could soon compete with the options that currently dominate the market.
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Types of solar panels: overview
Solar panels come in several types, each with unique solar panel materials and efficiency levels to suit different needs. Monocrystalline panels use single-crystal silicon, giving you high efficiency and a sleek look. Polycrystalline panels are made from multiple silicon fragments, making them cheaper but slightly less efficient. Thin-film panels use layered materials, so they're lighter and flexible, though you'll get lower efficiency. Your choice pretty much comes down to your space, budget, and energy requirements.
| Factor | Monocrystalline | Polycrystalline | Thin-Film |
|---|---|---|---|
| Material | Single-crystal silicon | Multi-crystal silicon | Amorphous silicon, CdTe, or CIGS |
| Efficiency | High (18% to 22%) | Moderate (15% to 17%) | Low to moderate (10% to 13%) |
| Appearance | Black, uniform look | Blue with speckled pattern | Solid black or dark, often matte |
| Cost | Highest | Lower than mono | Lowest (per watt, but varies by type) |
| Weight | Standard | Standard | Lightest |
| Lifespan | 25 to 30+ years | 20 to 25 years | 10 to 20 years (some shorter) |
| Temperature tolerance | Good (low degradation with heat) | Moderate | Excellent |
| Performance in low light | Good | Moderate | Best in diffuse or shaded light |
| Space efficiency | High (more power per square meter) | Moderate | Low (requires more area) |
| Installation flexibility | Limited to rigid, fixed mounts | Limited to rigid, fixed mounts | Highly flexible (can be curved or surface-mounted) |
| Best use cases | Residential rooftops, space-limited installations | Budget-friendly residential or large land-based installations | Portable systems, irregular surfaces, building integration |
Solar panels are just one component of a solar system, though. You'll also need an inverter, mounting racks, batteries (optional), a charge controller (for batteries), and wiring.
Polycrystalline vs monocrystalline solar panels
The overwhelming majority of residential solar panels are made from silicon crystal cells. These photovoltaic (PV) cells use silicon layers doped with boron (p-type) and phosphorus (n-type) to create an electric field that converts sunlight into electricity.
There are two types of silicon crystal solar panels:
- Monocrystalline solar panels: Monocrystalline panels use a single piece of silicon in their PV cell layer, which makes them more efficient and longer-lasting than other types.
- Polycrystalline solar panels: Polycrystalline solar panels are made by fusing smaller pieces of silicon into a single layer, which gets you lower efficiency but a more affordable price compared to monocrystalline panels.
Thin-film solar panels for lightweight applications
Thin-film is another popular type of solar panel technology. The PV layer in these panels is made from one of the following materials:
- Amorphous silicon (a-Si)
- Cadmium telluride (CdTe)
- Copper indium gallium selenide (CIGS)
- Organic photovoltaics (OPV)
Thin-film solar panels aren't typically as efficient as silicon crystal panels, but they have other advantages. They're usually lighter and more flexible, which makes them a good fit for portable applications and smaller consumer devices.
Passivated emitter and rear contact panels explained
Passivated emitter and rear contact (PERC) solar panels have grown in popularity. A specialized layer on the back of the PV cell reflects uncaptured sunlight back to the cell. NLR research finds that rear passivation adds 1% or more to photoelectric conversion efficiency compared to standard aluminum back surface field cells. PERC panels are still more expensive than other types, but they're beginning to compete in the consumer market.
How N-type solar panels compare to traditional cells
N-type solar panels are another emerging technology. These panels use n-type silicon crystals as the PV cell layer, which carry a negative charge due to being doped with phosphorus. N-type cells can be more efficient than traditional solar cells. The bigger difference, though, is heat resistance. N-type solar panels hold their efficiency better at higher temperatures, which also gives them better longevity.
Other solar panel technologies
A few other solar panel technologies are worth knowing about. They're earlier in development than the mainstream types, but could gain ground as the technology matures.
Bifacial solar panels for enhanced yield
Traditional solar panels capture light from the top only. Bifacial solar panels add PV cells to the rear of the panel to capture sunlight reflected from the mounting surface. Reflected light is less productive than direct sunlight, but bifacial panels can still pull meaningful extra energy from it.
Building-integrated photovoltaics in modern design
The look of solar panels has been a barrier for a lot of buyers, especially those in neighborhoods with HOA restrictions. Some manufacturers now make solar panels that function as architectural elements. One popular example is solar shingles, which are small solar panels cut in the shape of traditional shingles. They preserve the look of a home while still generating electricity.
Several brands make solar shingles:
- Tesla
- CertainTeed
- Timberline Solar (GAF Energy)
- SunTegra
- Luma Solar
Perovskite solar cells and their future potential
Perovskite cells are one of the newer technologies to emerge in the solar panel industry. They use perovskite-structured materials in their solar cells. Perovskite-structured materials have a different crystal structure from silicon and convert sunlight to energy more efficiently. NLR tracks perovskite efficiency climbing from 3.8% in 2009 to a certified 22% by 2016. A 2025 collaboration between NLR and CubicPV pushed that to a U.S. record of 24.0% certified efficiency for a perovskite minimodule. Early research also shows they don't need raw materials as pure as the 99.99% purity that traditional silicon cells require.
Concentrated photovoltaics in high-irradiance zones
Concentrated photovoltaic (CPV) technology is another promising development. CPV panels replace some PV cells with lenses and mirrors that concentrate sunlight before it reaches the PV layer, boosting output. CPV panels only make sense in high-irradiance zones. They can't use light diffused by clouds or precipitation, so they don't perform well in overcast climates.
Bottom line on solar panel types
Not everyone will benefit from solar panels, so it's worth considering whether they're the right fit for your home before making a decision.
If you're thinking about adding solar to your energy system, you've got real options. For most homeowners, monocrystalline panels hit the sweet spot between cost and efficiency. Solar panel technology keeps advancing, though. Some of the newer options could become a better fit for certain situations sooner than you'd think.
